I am moving into a building in which all condo units are served exclusively by DirecTV. The local provider wanted to charge me double the normal price for the equipment, so I said I would purchase it myself. I am planning on buying the R10 DVR unit for the main room, and a second receiver for the bedroom. Can I mix and match different brands of equipment? I found a used Samsung multi-sat receiver that I could use in the bedroom. Do I need to buy a multi-switch, or any other kind of accessory? All help appreciated. Thanks.